
\begin{table}[htb]
\caption{Robustness check: Experiment 2 with individual treatment conditions}
\begin{center}
\begin{tabular}{l c c}
\hline
 & Experiment 1 & Experiment 1 \\
\hline
Increased profit, lower wages & $-0.12$          & $-0.21$           \\
                              & $ [-0.57; 0.34]$ & $ [-0.66;  0.22]$ \\
Higher wages, reduced profit  & $2.28^{*}$       & $2.28^{*}$        \\
                              & $ [ 1.82; 2.71]$ & $ [ 1.79;  2.76]$ \\
Reduced profit, higher wages  & $2.25^{*}$       & $2.32^{*}$        \\
                              & $ [ 1.81; 2.70]$ & $ [ 1.85;  2.81]$ \\
Age                           &                  & $-0.03^{*}$       \\
                              &                  & $ [-0.04; -0.01]$ \\
Male legislator               &                  & $0.44^{*}$        \\
                              &                  & $ [ 0.11;  0.77]$ \\
Left-right ideology           &                  & $0.27^{*}$        \\
                              &                  & $ [ 0.14;  0.41]$ \\
Trustee vs. delegate          &                  & $0.48^{*}$        \\
                              &                  & $ [ 0.29;  0.67]$ \\
Government party              &                  & $0.06$            \\
                              &                  & $ [-0.30;  0.42]$ \\
Single member districts       &                  & $0.52^{*}$        \\
                              &                  & $ [ 0.04;  0.98]$ \\
Upper chamber                 &                  & $-0.19$           \\
                              &                  & $ [-0.58;  0.24]$ \\
First term legislator         &                  & $-0.11$           \\
                              &                  & $ [-0.48;  0.26]$ \\
Intercept                     & $3.89^{*}$       & $3.91^{*}$        \\
                              & $ [ 3.54; 4.23]$ & $ [ 2.84;  4.83]$ \\
\hline
N                             & $894$            & $789$             \\
\hline
\multicolumn{3}{l}{\scriptsize{\parbox{0.85\linewidth}{$^*$ Null hypothesis value outside the 95\% confidence interval. Entries are unstandardized coefficients from a linear mixed-effect regression model. Bootstrapped confidence intervals in parentheses. Countries function as groups. Support for PTAs is captured on an 11-point scale. ``Lower wages, increased profit'' is the reference category.}}}
\end{tabular}
\label{tab:tableN2}
\end{center}
\end{table}
